A career path, not a catalogue. Start with a 22-topic starter path you can finish, then branch into automation, delivery, a specialism, or testing AI systems. You do not need all 123 topics to get a job.
123 topics in the full library9 stages123 guides written
Core
Required for this stage.
Go deeper
Choose this when it supports your role or specialisation.
Reference
Know what it is; return when you need it.
Your progress on this path22 topics
Mark a topic complete only after doing its practice task. Ticks stay in this browser: nothing is sent anywhere, and there is no account to make.
Milestone 4Run that suite in CI and diagnose a failed run.
Stage 6a
Specialise: performance, security, accessibility
Performance, security, accessibility and privacy: areas where failures can have the highest customer and business impact, and where unsupervised AI is weakest.
0 topics on this path
These topics are not on Starter path. Switch path, or open Full map.
Stage 6b
Specialise: AI as your instrument
Using AI to do the testing job better. This is the layer that makes an engineer who already has a job faster at it.
0 topics on this path
These topics are not on Starter path. Switch path, or open Full map.
Stage 6c
Specialise: testing AI systems
Many teams are beginning to ship large-language-model features, and almost nobody knows how to test one. The largest layer here, on purpose.
0 topics on this path
These topics are not on Starter path. Switch path, or open Full map.
Throughout
Communication, risk, and career growth
What stays scarce once writing tests gets cheap. Start these skills in Stage 1 and deepen them as you go; they are not a final exam.
After this stage, you can
Describe launch risk in language a product manager will act on, and show work a hiring manager can open.
Build this
A public write-up, a small suite, or a post-mortem that a stranger could follow.
Typical roles
Senior QA, QA lead, quality engineer, AI quality.
About
Ongoing, a little in every stage at five hours a week
The roadmap is a living document, not a snapshot. New topics are added as the field moves, and guides are revised when the thing they describe changes. A topic added after launch is flagged New topic on the map. Revisions to existing guides are not badged on every card; they show up here and on the guide itself. The version stamp moves once a year.